GdPicture.NET.14
GdPicture14 Namespace / GdPictureImaging Class / PatchCodeReaderGetCodeCount Method
Example





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PatchCodeReaderGetCodeCount Method (GdPictureImaging)
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Returns the number of Patch Code detected by the PatchCodeReaderDoScan method.
Syntax
'Declaration
 
Public Function PatchCodeReaderGetCodeCount() As Integer
public int PatchCodeReaderGetCodeCount()
public function PatchCodeReaderGetCodeCount(): Integer; 
public function PatchCodeReaderGetCodeCount() : int;
public: int PatchCodeReaderGetCodeCount(); 
public:
int PatchCodeReaderGetCodeCount(); 

Return Value

The number of Patch Code detected.
Remarks

This method is used in the "Barcode Recognition" Demo.

Example
Finding patch codes in an image and writing complete barcodes info into a file.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
 
    // Start the patch codes scanning process and write complete information into a text file.
    gdpictureImaging.PatchCodeReaderDoScan(imageID);
 
    using (System.IO.StreamWriter file = new System.IO.StreamWriter("patch codes.txt"))
    {
        int patch codesFound = gdpictureImaging.PatchCodeReaderGetCodeCount();
 
        for (int i = 1; i <= patch codesFound; i++)
        {
            // Patch codes type, possible values are 1, 2, 4, 8, 16 or 32.
            PatchCodeType type = gdpictureImaging.PatchCodeReaderGetCodeType(i);
            file.WriteLine("Patch code type = " + type.ToString());
 
            // The patch code position, given by the coordinates of the corners.
            file.WriteLine("Position =  Top-Left=["
                + gdpictureImaging.PatchCodeReaderGetCodeX1(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY1(i)
                + "] Top-Right=[" + gdpictureImaging.PatchCodeReaderGetCodeX2(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY2(i)
                + "] Bottom-Right=[" + gdpictureImaging.PatchCodeReaderGetCodeX3(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY3(i)
                + "] Bottom-Left=[" + gdpictureImaging.PatchCodeReaderGetCodeX3(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY4(i) + "]");
        }
    }
 
    // Release used resources.
    gdpictureImaging.PatchCodeReaderClear();
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}
See Also